Get a compile error in ex/standard/basic_functions.c because realpath() is not available.
The current code does not check for HAVE_REALPATH...here is the current code:
#if (!defined(PHP_WIN32) && !defined(__BEOS__)) || defined(ZTS)
PHP_FE(realpath, NULL)
#else
PHP_FALIAS(realpath,warn_not_available,NULL)
#endif
HAVE_REALPATH should be checked.

Ill look into it.
Amra, you seem to report a lot of bugs on both IRIX and OS400, one of the problems we have is getting access to some of the less common machines to test fixes etc, especially with IRIX and OS400 machines.
Do IBM have any test machines we could possibly get accounts on for testing fixes, this would be a great help if it is possible and would allow us to fix bugs quicker as what generally happens now is people see its OS400 or IRIX and ignore them as we dont have machines to test fixes on.
- James